I've gone back to using my original iPhone I purchased on launch day back in August of 2006 (as my iP4 is in for a simple repair). I am now using it daily, and the single feature I miss the most is jailbreak. It has the 3.1.3 firmware and I know there is a way of rolling back the firmware to 3.1.2 and jailbreaking it but honestly, the instructions are a bit confusing and it seems like no matter what I couldn't get redsn0w 9.3 to load and that's required as part of that jailbreaking scheme. In tinkering around I discovered if there was a way I could use iTunes 9.0, I could then jailbreak with Spirit. Such as easy solution as Spirit takes seconds to jailbreak and is so incredibly easy. The issue there is my Mac is loaded with the latest iTunes. I googled around and located a website called, "wwwoldapps.com" and found iTunes 9.0 download on it. So here is what I did. My wife's computer- an HP running Windows, doesn't have iTunes installed. So I installed iTunes 9.0 via this website I found onto it and when I USB plugged in my iPhone, Spirit opened and within a couple of clicks I was jailbroken. Cydia is even automatically installed! I then disconnected from her computer and plugged my iPhone into my iTunes. First thing I did (after doing the happy dance) was download MyWi as I already had it purchased for my iP4 and although tethering is a bit slower because of the EDGE network, can now access the web via my iPhone to my iPad. So, for those of you on 3.1.3 with your older iPhones here is a quick and friendly way of jailbreaking somewhat effortlessly and certainly painlessly. I'm going to kick myself if somehow this is already old news on these forums because I searched and searched and couldn't locate anything to lead me in the direction I ended up taking!